483451 VPS help and Script restart

I have a VPS server running a script that is used for setting up accounts on a classified ad website. The script ran perfect for months until yesterday when the site was getting internal errors. After about 24 hours I thought a reboot would be in order to restart processes. Unfortunately, I know not what I am doing within a VPS so, currently my site is down and I am unable to use the script. I foresee this project as being fairly simple for someone who knows how to manipulate servers. I need the server to be functioning and if the script is not working I would like you to take a look at it and see what is going wrong. Thanks. Please put "I ain't mad at me" in your reply so I know it is not a p-reply or a bot. Thanks again. PS. This is fairly urgent and if I can't get it done in the next day or so I will move on to other options.